US Bridges

Old Midland Road over Irrigation Canal

Fair

Klamath County, Oregon · 043 MI E of HWY 97 · Structure no. 35C171088800430

Built
1971
54 years old
Condition
Fair
inspected February 2023
Type
Slab
Wood or Timber
Length
25 ft
1 main span
Daily traffic
409
2020 count
Owner
County
County Highway Agency

About this bridge

Old Midland Road over Irrigation Canal is a wood or timber slab carrying Old Midland Road over Irrigation Canal in Klamath County, Oregon. It was built in 1971, so it is 54 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 409 vehicles a day, roughly 10% of them trucks, projected to reach 424 by 2025. The structure is 25 ft (7.6 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesOld Midland Road
CrossesIrrigation Canal
Location043 MI E of HWY 97
RouteCounty Highway C0888
CountyKlamath County
StateOregon
Coordinates42.12625, -121.74596
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.1 US tons
Inventory rating31.7 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span24 ft (7.3 m)
Deck width33 ft (10.1 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic409 (2020)
Projected traffic424 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Midland Road over Irrigation Canal built?

It was built in 1971, making it 54 years old in 2025.

What condition is Old Midland Road over Irrigation Canal in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2023.

How much traffic does Old Midland Road over Irrigation Canal carry?

About 409 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Old Midland Road over Irrigation Canal?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.3 m) and a deck 33 ft wide.

Who owns Old Midland Road over Irrigation Canal?

It is owned by the County Highway Agency.